Finding the Fourth Proportional to 64,693.32, 89,255.43 and 52,736.10

Step by Step Solution

1. Step 1: Write the proportion equation
   64,693.32 : 89,255.43 = 52,736.10 : x
2. Step 2: Convert to fraction form
   64,693.32/89,255.43 = 52,736.10/x
3. Step 3: Cross multiply
   64,693.32x = 89,255.43 × 52,736.10
4. Step 4: Simplify right side
   64,693.32x = 4,706,983,282.02
5. Step 5: Solve for x
   x = 4,706,983,282.02/64,693.32
6. Step 6: Final answer
   x = 72,758.41